Flask



March 14, 1939. A. J. RELLINGER Z,l50,589

FLASK Filed April 19, 1938 A NVEINTOR. A. J Rel/Z nger WMM- UNITEDsTATEs PATENT oFFicE FLAsK Alois J. Bollinger, Toledo, ohio ApplicationApril 19,

6 Claims.

The present invention relates to improvements in asks such as thoseemployed in the production of sand molds in foundries and isparticularly concerned with improving the devices by means of whichproper alignment of the Cope and drag may be obtained and maintainedduring molding of the sand and manual separation of the cope and drag.

An object of the invention is a readily adjustable novel g manipulatedreadily by the lishing proper alignment between the the provision ofuide which may be workman in estabcope and drag and in regulablycontrolling the degree of friction between guide pins carried by thedrag and the guides which are mounted upon the cope,

theV latter being important and effected coincidental with adjusting theguide for the purpose of maintaining the cope in proper position duringinitial movement thereof away from the drag.

A further object of the invention is the provision of a novel form ofadjustable guide wherein both adjustment and complete separation of theguide from the guide pin and flask may be accomplished with comparativeease.

It is also an object of the present invention to provide a guide soconstructed that parts thereof may be replaced with ease when necessary.

Other objects will be part pointed out hereinafter.

In the drawing:

Fig. 1 is a perspective View in part apparent and in illustrating theapplication of the present invention.

Fig. 2 is an elevational view of the adjustable guide.

Fig. 5 is a sectional the line 5-5 of Fig. 3.

elevational view taken along Fig. 6 is a detail perspective view of thenonadjustable guide and guide ployed at the end of the flask in'l'lig.1.

pin which are emopposite that shown The flask Il) may well be ofconventional form as illustrated (Fig. l) and upon which the cope I2 issuitably tapered the finished mold (not shown).

of rigidly connected side walls I3,

includes pairs each pair being hinged together by a hinge include a dragI I mounted, both being to facilitate removal thereof from The drag I Iat one corner and separably connected at the corner diagonally oppositethe hinge by a latch l5. The cope I2 is similarly formed, includingpairs of side walls IIS, a hin ge I1 and latch I8.

As shown, the ask is rectangular in contour and its side walls taperslightly, out heretofore.

Accurate alignment of the for reasons pointed cope and drag ing in theform carrying 1938, Serial No. 202,871

during molding of the sand therein about the form is absolutelyessential and it is also eX- tremely important to avoid excessivelateral movement of the lcope as it is separated from the drag followingthe sand molding operation. To this end `the present invention providesfor the employment of a permanently fixed vertical guide pin I9 on awall I3 of the drag adjacent the hinge, said guide pin being slidinglyreceived in a permanent rigid guide 20 which is attached to the cope I2.The guide pin I9 may well be substantially V-shape 1n cross section, thewalls thereof being disposed at approximately 90 to each other or anyother more desirable angle. The apex of the angle faces away from theflask. Attaching anges 2| or fingers are cast upon the lower end of thepin. This pin I9, when the cope and drag are assembled with a form (notshown) projects upwardly through an openplate (not shown) and the guide20, the latter including attaching ngers 22, a reenforcing hand piece 23and a guide opening 24 which consists of right angle walls 25 oryflanges which slidingly engage the corresponding guide pin. Presumablythe pin and guide and the corresponding walls of the cope and drag areso assembled that said walls are properly aligned. Those walls of thecope and drag opposite those carrying the permanent guide and pin areprovided with the adjustable unit.

This adjustable unit includes a guide pin 2B which is permanently fixedto the drag and corresponds in al1 details to the aforementioned guidepin I9. In fact they are readily interchangeable if necessary. The guide2l' however, is adjustable and may be taken apart with facility for thereplacement of broken parts, for example.

The specific construction illustrated consists of a base plate 28 whichis rigidly attached to the cope immediately above and in alignment withthe guide pin. A shallow channel 29 or guideway in the outer face of thebase plate accommodates the inner free edges of the guide pin. An arm 30which includes a guideway 3| formed by a pair of right angularlydisposed walls 32 or flanges is pivoted at one end to the base by avertical hinge pin 33. 'The base plate 28 and arm 30 are spaced aparthorizontally to permit free passage of the guide pin 2S therebetween. Acoil expansion spring 34 or its equivalent is positioned between thebase plate and arm, preferably adjacent the separable ends thereof forthe obvious purpose of exerting outward pressure upon. said arm.

The base plate and arm have their separable ends adjustably connected by'a screw 35 which is threaded into a boss 36 formed on the base plate 2Sand extends outwardly through an opening 3l in the arm 30. The head ofthe Screw is in vthe base plate the form of a disk 38 and finger piece39, the former being provided in its periphery with recesses di) whichengage a spring pressed ball M or detent. Thus the screw is releasablyheld in any adjusted position. 'Ihe ball or detent is carried by the arm3c. A guard iange l2 is cast upon the arm in position to partiallyencircle the periphery of thedisk.

By adjusting the screw, the frictonal engagement between the guide pinsand guides is increased or decreased'to meet the specific requirementsof the workman and any particular operating conditions. This ofcourse'functions to bring about a slight relative lateral shifting ofthe cope and drag such as may be necessary on account of warpage or someother distortion of the walls or portions thereof.

While a more or less specific Vconstruction has been described in theforegoing, it is understood that numerous modications may be resorted towithin the spirit of the invention as claimed.

I claim:

1. In a flask comprising a cope, a drag positioned for cooperationtherewith, the cope and drag each comprising pairs of walls hingedtogether at a common point and means releasably connecting the Walls ata point opposite the hinge, guide means for aligning the cope and dragincluding a guide pin and cooperating guide rigidly attached to the dragand cope respectively in proximity to the hinge and a guide pin fixed toand extending upwardly from that wall of the drag opposite the otherguide pin, the improvement which comprises a guide for receiving thelast named guide pin consisting of a base plate attached to the cope, anarm movably attached to and having a vertical guideway to receive saidlast named pin, spring means normally urging the arm away from the baseplate and manually operable means for adjusting the position of said arminwardly towards the base plate. Y Y l 2. In a flask comprising a cope,a drag positioned for cooperation therewith, the cope and drag eachcomprising pairs of walls hinged togetherV at a common point and meansreleasably connecting the walls at a point opposite the hinge, guidemeans for aligning the cope and drag including a guide pin andcooperating guide rigidly attached to the drag and cope respectively inproximity to the hinge and a guideY pin xed to and extending upwardlyfrom that wall of the drag opposite the other guide pin, the improvementwhich comprises a guide for receiving the last named'guide pinconsisting of a base Yplate attached to the cope, an arm pivoted at oneend Vto the base plate and having substantially medially thereof avertical guideway to receive the guide pin, means separably connectingthe free end of the arm andsaid base plate and spring means normallyurging the arm away from the base plate.

3. In a ask comprising a cope, a drag positioned for cooperationtherewith, the cope and drag each comprising pairs of walls hingedtogether at a common point and means releasably connecting the walls ata point opposite the hinge, guide means for aligning the cope and dragincluding a guide pin and cooperating guide rigidly attached to the dragand cope respectively in proximity to the hinge and a guide pin fixed toand extending upwardly from that wall of the drag opposite the otherguide pin, the improvement which comprises a guide for receiving thelast named guidepin consisting of a base plate attached to the cope, anarm pivoted at one end to an end of the base plate, means adjustablyconnecting the base plate and free end of the arm, an expansion coilspring adjacent the free end of the arm normally urging the latter awaycluding a guide pin and cooperating guide rigidly attached to the dragand cope respectively in proximity to the hinge and a guide pin xed toand extending upwardly from Vthat wall of the drag opposite the otherguide pin, the improvement which comprises a guide for receiving thelast named guide pin consisting of Va base plate attached to the cope,an arm pivoted at one end to an end-ofthe base plate, a screw extendingoutwardly fromthe other end 'of the base plate and adjustably connectingit to the arm, means including a spring pressed detent for locking thescrew in any adjusted position, spring means normally urging the armoutwardly into engagement with said screw and a pair of vertical flangesdisposed at an angle to each other and forming a guideway for said pin.

5. In a flask comprising av cope, a drag positioned for cooperationtherewith, thercope and' drag each comprising pairs of walls hingedtogether at a common point and means releasably connecting the walls ata point opposite the hinge, guide means for aligning the cope and dragincluding a guide pin and cooperating guide rigidly attached to the dragand cope respectively in proximity to the hinge and a guide pinxed toand extending upwardly from that wall of the drag opposite the otherguide pin, the improvement which comprisesa guide for receiving the lastnamed guide pin consisting of a base plate attached to the cope, an armpivoted at one end to an end of the base plate, a screw extendingoutwardly from the other end of the base plate and adjustably connectingit to the arm, said screw including a disk-like base having an annularseries of recesses in its periphery, a spring pressed detent carried bysaid arm and engageable with the recesses one at a time, yielding meansnormally urging the arm outwardly into engagement with the screw and pinguiding means provided substantially medially of the arm.

6. A pin guide for a flask comprising a base plate, an arm pivoted atone end to an end of the base plate for horizontal swinging movement,said arm having a furcated free end, a screw extending outwardly fromthe base plate and normally into the furcation, disk-like base having anannular series of recesses in its periphery, said base interconnectingthe screw and arm, a spring pressed detent carried by the arm andengageable with the recesses one at a time, yielding means normallyurging the arm outwardly into engagement with the screw base, andvertical pin guiding means provided on the inner sideA of said arm.

ALOIS J. RELLINGER.

said screw including a

